Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 802 AM EDT Tue Apr 19 2016 Valid 00Z Wed Apr 20 2016 - 00Z Wed Apr 27 2016 Latest guidance shows good agreement with the overall forecast for the next seven days, featuring moderate trades and periods of generally windward focused rainfall. A ridge aloft will cross the area from west to east around Thu and then a modest weakness will set up just southwest of the islands from Fri into the weekend. Most models/ensemble means expect ridging to rebuild to the west/north by next Tue. At the surface elongated high pressure to the northwest of the state will head into the eastern Pacific as it merges with a faster moving high originating from the western Pacific. Surface ridge extending southwest from the eastern Pacific high center, and eventually possible westward rebuilding of the high next Tue, should support persistence of trades through the end of the forecast period. Rausch